John Haygarth
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John Haygarth FRS FRSE was an 18th-century British physician who discovered new ways to prevent the spread of fever among patients and reduce the mortality rate of smallpox.
John Haygarth
Elisha Perkins
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Elisha Perkins was an American physician who created a fraudulent medical device, the Perkins Patent Tractors. Although they were made of steel and brass, Perkins claimed that they were made of unusua
John Haygarth
…banks that would allow people to save money more efficiently and safely. In 1799, Haygarth investigated the efficacy of medical instruments called "Perkins tractors". These were metal pointers which were supposedly able to "draw out" disease. They were sold at the extremely high price of five guineas, and Haygarth…
Elisha Perkins
Metallic Tractors. Caricature of a quack treating a patient with Perkins Patent Tractors by James Gillray, 1801
Modern facsimiles of Perkins tractors